South Carolina is 1.03× the size of Bohai Sea

South Carolina (state) covers about 80,200 km² (31,000 mi²) and the Bohai Sea (sea) about 77,900 km² (30,100 mi²). Below, both outlines are drawn at one scale and centred on each other. The Bohai Sea outline is Natural Earth’s, checked against the published area.

80,200km²South Carolina
77,900km²Bohai Sea

100 km

South Carolina
Bohai Sea

What fits

Bohai Sea is 97% of the size of South Carolina.
South Carolina is larger by 2,300 km² (887 mi²), which is 3.0% of the area of Bohai Sea.
Measured in Belgiums: South Carolina is about 2.61, Bohai Sea about 2.54.

How they differ

Their centres are about 11,600 km apart.
On a standard web map Bohai Sea looks larger than South Carolina: South Carolina at 34°N is drawn about 1.5× too large and Bohai Sea at 39°N about 1.7×, so the map shows Bohai Sea as 1.11× the size of South Carolina, when South Carolina is 1.03× the size of Bohai Sea.
Together South Carolina and Bohai Sea cover 158,000 km², close to the size of Tunisia (157,000 km², 0.9% smaller).
The gap between them, 2,300 km², is about the size of Luxembourg (2,610 km²).
Bohai Sea's centre is 5.1° of latitude, about 560 km, farther north than South Carolina's.
South Carolina is a state of the United States; it is not drawn with its waters removed, and its measured area is the Natural Earth outline's.
The Bohai Sea is a sea and ranks 31st of the 42 seas on sizeversus by area.
Laid out flat, South Carolina stretches about 355 km north to south and 439 km east to west; the Bohai Sea about 429 km by 404 km.
Wikidata’s published figure of 77,000 km² agrees with our measured 77,900 km², to within 2%.

Who wins on what

Measure	Winner	By
Larger area	South Carolina	1.03×
Farther north	Bohai Sea	5.1° of latitude
Stretched more on a web map	Bohai Sea	1.7× against 1.5×

Both against the same yardsticks

Yardstick	South Carolina	Bohai Sea
Belgium 30,700 km²	2.61×	2.54×
United Kingdom 244,000 km²	0.33×	0.32×
Germany 358,000 km²	0.22×	0.22×
Japan 374,000 km²	0.21×	0.21×
France 548,000 km²	0.15×	0.14×
India 3,151,000 km²	0.03×	0.02×
Brazil 8,473,000 km²	0.01×	0.01×
United States 9,447,000 km²	0.01×	0.01×
Russia 16,980,000 km²	1 in 212	1 in 218

Each figure is the place's area divided by the yardstick's.

Side by side

	South Carolina	Bohai Sea
Is a	StateUnited States	Seasea on sizeversus
Area, measured	80,200 km²31,000 mi²	77,900 km²30,100 mi²
Area, published	82,900 km²Wikidata	77,000 km²Wikidata
Rank by area	–	31st of 42seas
Greatest depth	–	30 mWikidata
Latitude range	32°N to 35°N	37°N to 41°N
On the shore	–	1 on the shore

Published figures: Wikidata (CC0). A lake or a sea has no legal boundary: the measured area is that of Natural Earth’s outline, and it is shown beside the published one.

Natural Earth’s outlines of China lie within 25 km of the outline of the Bohai Sea. That is what its geometry says, and it is not a statement about who owns the water or where any border runs in it.

Similar in size to South Carolina

Similar in size to Bohai Sea

More comparisons

Sources and method

Outlines: Lakes and seas: Natural Earth 1:10m physical vectors (public domain), kept only where the measured area is within 10% of the published one. Countries and regions: Natural Earth, 1:10m Admin 0 and Admin 1, public domain.
Boundary: De facto, as drawn by Natural Earth. A lake or a sea has no legal boundary of its own; the outline is a cartographic one.
Area: Measured on the WGS84 ellipsoid from the full-detail outlines, shown rounded. The published figure comes from Wikidata (CC0), fetched 2026-11-11, and is shown beside the measured one.
Drawing: Each outline is projected with an equal-area projection centred on its own centroid, so areas stay true and the two can be laid over each other.
Data built: 2026-11-11

Full method